How to write high-quality image Alt text to improve GEO performance?

When writing image Alt text to enhance GEO effectiveness, it is necessary to accurately describe the image content as the foundation while incorporating meta-semantic associations to help AI understand the image's significance on the page. **Core Points**: - **Clear Subject**: Prioritize describing the core elements of the image (e.g., "Red sports shoe side view" instead of "Image") and avoid vague expressions. - **Context Relevance**: Supplement key information based on the page theme. For example, product images can include "Non-slip sole design suitable for outdoor hiking" to enhance semantic relevance. - **Avoid Keyword Stuffing**: Naturally incorporate 1-2 core keywords instead of listing words to ensure no ambiguity when AI recognizes them. **Adaptation to Common Scenarios**: - Product Images: "Black leather business briefcase with combination lock and laptop compartment" - Infographics: "2023 global e-commerce user growth trend bar chart, with Asia market accounting for 35%" - Decorative Images: No complex description is needed; use an empty Alt attribute (alt="") to avoid interfering with AI understanding It is recommended to regularly check the consistency between Alt text and the page theme. Consider using GEO meta-semantic optimization services like Star Reach to ensure that image information forms a linkage with the brand's core semantic system, improving the accuracy of AI references.